What is the percent composition of n in hno3 ?

find the total mass of the nitric acid   hno3

then divide the mass of each atom by the total mass to find the percentage.

explanation:

h = 1 × 1 = 1g

n = 1 × 14 = 14g

o = 3 × 16 = 48g

now we have to add all these up :

1g + 14g + 48g + = 63g

%h = 1/63

# 1/63 = 1.5% h

%n = 14/63

# 14/63 = 22% n

%o = 48/63

# 48/63 = 76% o

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